Gordon adds a piece of solid zinc metal to a beaker of hydrochloric acid. He identifies the products as zinc chloride and hydrogen gas. Which process took place in the beaker?

HNO3 Express your answers as ions separated by a comma.

Which best describes how scientific procedure instructions should be written for others? They should be written clearly. They should be written partially. They should include opinions.

The phenolic indicator (In-OH) has approximately the same pKa as a carboxylic acid. Which H is the most acidic proton in In-OH? Circle or otherwise indicate the most acidic proton. Explain why that H is the most acidic proton in In-OH (i. e.

Does a steel marble have more kinetic energy than a ceramic marble

Which of these statements about reaction rates is accurate? All chemical reactions occur at the same rate. All chemical reactions occur at a fast rate. All chemical reactions occur at a slow rate. All chemical reactions occur at different rates.

Audrey is driving 50 miles in 2 hours what is her average speed?

Water has a specific heat of 4184 J / (kgK) how much energy is needed to increase the temperature os a kilogram of water 5C?

A student noticed while doing the neutralization experiment that the calorimeter kept getting warmer. how would this error affect the final calculation for the δhneut of each reaction? would it be overestimated, underestimated or remain unaffected?

A solution contains 45 grams of nitrogen gas and 40 grams of argon. What is the mole fraction of argon in this solution?

How is an animal cell related to tissue and organs